import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:tasq/models/profile.model.dart';
import 'package:tasq/models/programmer_day_sheet.model.dart';
import 'package:tasq/providers/leave_provider.dart';
import 'package:tasq/providers/programmer_day_data_provider.dart';
import 'package:tasq/providers/programmer_day_sheets_provider.dart';
import 'package:tasq/providers/programmer_tasks_provider.dart';
import 'package:tasq/providers/profile_provider.dart';
import 'package:tasq/screens/programmer_tasks/programmer_drill_down_screen.dart';
import 'package:tasq/theme/app_theme.dart';
import 'package:tasq/utils/app_time.dart';

// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------

ProgrammerDaySheet _sheet({
  required String id,
  required String status,
  required DateTime workDate,
}) {
  final now = AppTime.now();
  return ProgrammerDaySheet(
    id: id,
    programmerId: 'u1',
    status: status,
    workDate: workDate,
    autoSubmitted: false,
    resubmissions: 0,
    createdAt: now,
    updatedAt: now,
  );
}

Widget _buildApp(String userId, {List<Override> overrides = const []}) {
  return ProviderScope(
    overrides: overrides,
    child: MaterialApp(
      theme: AppTheme.light(),
      home: ProgrammerDrillDownScreen(userId: userId),
    ),
  );
}

List<Override> _minimalOverrides({
  List<ProgrammerDaySheet> sheets = const [],
}) {
  final today = DateTime.utc(2026, 9, 28);
  return [
    isStrictAdminProvider.overrideWith((ref) => true),
    profilesProvider.overrideWith((ref) => Stream.value([])),
    currentProfileProvider.overrideWith((ref) => Stream.value(null)),
    programmerTasksProvider.overrideWith((ref) => Stream.value([])),
    programmerRunStatesProvider.overrideWith((ref) => const {}),
    clockTickerProvider.overrideWith((ref) => Stream.value(today)),
    todayKeyProvider.overrideWith((ref) => today),
    leavesProvider.overrideWith((ref) => Stream.value([])),
    programmerDayDataProvider.overrideWith(
      (ref, day) => Future.value(
        DayActivityData(day: day, tasks: [], logsByTask: {}, workLogs: []),
      ),
    ),
    daySheetsForUserProvider.overrideWith((ref, userId) => Stream.value(sheets)),
  ];
}

// ---------------------------------------------------------------------------
// Tests
// ---------------------------------------------------------------------------

void main() {
  setUpAll(AppTime.initialize);

  group('ProgrammerDrillDownScreen — recent day sheets', () {
    testWidgets('shows Recent day sheets header when there are sheets',
        (tester) async {
      final sheets = [
        _sheet(
          id: 's1',
          status: DaySheetStatus.pending,
          workDate: DateTime.utc(2026, 9, 27),
        ),
        _sheet(
          id: 's2',
          status: DaySheetStatus.approved,
          workDate: DateTime.utc(2026, 9, 26),
        ),
      ];

      await tester.pumpWidget(
        _buildApp('u1', overrides: _minimalOverrides(sheets: sheets)),
      );
      await tester.pump();

      // AppSectionHeader renders title in uppercase
      expect(find.text('RECENT DAY SHEETS'), findsOneWidget);
    });

    testWidgets('shows both sheet dates', (tester) async {
      final d1 = DateTime.utc(2026, 9, 27);
      final d2 = DateTime.utc(2026, 9, 26);
      final sheets = [
        _sheet(id: 's1', status: DaySheetStatus.pending, workDate: d1),
        _sheet(id: 's2', status: DaySheetStatus.approved, workDate: d2),
      ];

      await tester.pumpWidget(
        _buildApp('u1', overrides: _minimalOverrides(sheets: sheets)),
      );
      await tester.pump();

      expect(find.text(AppTime.formatDate(d1)), findsOneWidget);
      expect(find.text(AppTime.formatDate(d2)), findsOneWidget);
    });

    testWidgets('shows RECENT DAY SHEETS even with empty sheets list',
        (tester) async {
      await tester.pumpWidget(
        _buildApp('u1', overrides: _minimalOverrides()),
      );
      await tester.pump();

      expect(find.text('RECENT DAY SHEETS'), findsOneWidget);
    });
  });
}